Roadmaster Hy-Power Diodes (Qty 4)

Roadmaster Hy-Power Diodes (Qty 4)

Item # RM-794

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Accessories and Parts RM-794 - Diodes - Roadmaster
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  • Tow Bar Wiring
  • Diodes
  • Roadmaster
Call 800-298-8924 to order Roadmaster accessories and parts part number RM-794 or order online at etrailer.com. Free expert support on all Roadmaster products. Guaranteed Lowest Price and Fastest Shipping for Roadmaster Hy-Power Diodes (Qty 4). Accessories and Parts reviews from real customers.


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Roadmaster Accessories and Parts - RM-794


Roadmaster Hy-Power Diodes

Diodes permit electrical current to flow in only one direction - from the motorhome to the car - preventing electrical feedback and the damage it can cause to the towed car's electrical components.

Features:

  • Qty: (4) Diodes
  • Reduces wiring hassles
  • Trouble free operation
  • Includes detailed wiring instructions
  • Maximum load is 85 amps per diode

794 Roadmaster Hy-Power Diodes





Video of Roadmaster Hy-Power Diodes (Qty 4)


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Roadmaster Tow Bar Wiring RM-794 Review

Speaker 1: Today we're going to take a look at the Roadmaster heavy duty Hy-Power diodes for a quantity of four. Now, this will allow motor homes or RVs to power the lights on the tow vehicle without power feedback. The diodes will permit electrical current to flow in only one direction, from the motor home to the car, preventing any electrical feedback and the damage that it can cause to the tow car's electrical components.This part is for a quantity of four diodes with the 12 spade terminals included to hook this up. It is a heat sink design on the diode and this does reduce wiring hassles. It's a trouble-free operation. It does include detail wiring instructions on the back here, and the maximum load is 85 amps per diode.

That should do it for the review on the Roadmaster heavy duty Hy-Power diodes for a quantity of four.


Customer Reviews

Roadmaster Hy-Power Diodes (Qty 4) - RM-794

Average Customer Rating:  4.9 out of 5 stars   (109 Customer Reviews)


- RM-794
by:

Diodes work as designed. They eliminate additional lights and prevent the need to drill a hole in the tail light assembly. I used these on a previous vehicle and they are still problem free after eight years. 297661



- RM-794
by:

I installed these diodes on my wifes 2006 VW Jetta TDI to isolate the signal and tail light system from my tow vehicle. The system works as planned and the quality of the parts are excellent! VW/Audi products are notorious for system glitches when you drive the stock lights with a tow vehicle. I routed standalone wires from the front bumper mounted bulkhead plug to the rear of the car down the inside of the drivers side rocker panel and into the trunk area. 273306



- RM-794
by:

I have used these in the past so when i got a new tow vehicle i bought them again. They make wiring up the lights on a tow vehicle a snap. I have never had one fail. 695049



- RM-794
by:

Product fit great. Superfast shipping and great communication! 691931



- RM-794
by:

Fair price, delivered as agreed on time. Would buy again from this vendor. Only reason I did not give this five stars is that I have yet to actually hook them up in the wiring system to enable my factory lights on the towed vehicle to be operational when taken on a trip behind my RV. 656394



- RM-794
by:

Wired up 2012 Jeep JKU for towing behind RV. These 4 diodes worked perfectly! Watched trailer video, it was easy. 603740



- RM-794
by:

I used these on another vehicle and another brand on a different vehicle, these were far superior the other brand gave me lots of trouble. 434876



- RM-794
by:

Does what it's advertised to do. Thanks for the quality! No worries. 307306



- RM-794
by:

straight forward instructions, worked w ell 285900



- RM-794
by:

Happy with the product. 271078



- RM-794
by:

perfect for my project -- using to tie flood lamps to rear of fire apparatus to use in conjunction with back up lamps and separately use the floodlights to be switched at the back of the apparatus 248953



- RM-794
by:

These little beauties perform exactly as described. e trailer is a great company to deal with. I highly recommend them! 221501



- RM-794
by:

i installed this product in my golf cart because when i have to load the golf cart onto the trailer to take it to get repaired i can connect the golf cart to the truck and the trailer lights to the connecter at the back of the golf cart so that all the lights work 171578



- RM-794
by:

Just as described!! 153168



- RM-794
by:

Product was great Tracking is terrible 107663



- RM-794
by:

Received timely and good condition. 100915



- RM-794
by:

This is a solid product. The package had sufficient instructions for installation by someone who had never installed the diodes before. 97805



- RM-794
by:

Product was exactly as described and the shipping was very fast. Got the item as stated. 96123



- RM-794
by:

I've used this product several times over the years and found the best price for this quality product here at Etrailer.com. The service was great with fast shipping and no damage to my items. I'll definitely buy for them again. Tom D. Grants Pass, Oregon 91376



- RM-794
by:

Product as advertized. Arrived on time. Well packed. 63245



- RM-794
by:

Great Service, Great Prices and quick shipment. 45268



- RM-794
by:

Easy to install and works great! 21687



- RM-794
by:

Easy to install in-line of your towed vehicle. Use your toad's own lighting and eliminate magnet sets or additional lighting installs. As easy as wiring a trailer. Make towing your toad as simple as possible. You owe it to yourself. 13170



- RM-794
by:

I use these to wire my tail lights on my cars to work with my motor home. Have used these on my vechicles since 2002, never a failure. 7227



- RM-794
by:

Installing Baseplate an wire tailites for towing instructions were great,the plate fit very good. The diodes work fine but wireing a ford edge for towing was hard an room for the diodes back of the tailites was very limited .I would very highly recomend your products 3751



- RM-793
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


Installed 6 of these to wire up my 04 Honda CR-V as a Toad. They work great so far, lights come on from either the CR-V or the RV. Nice that they come with the terminal lugs so all you have to do is strip and crimp the wires. 223175



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


I needed to charge my tow vehicle battery by taping in to my tail lights on my motor home. This will prevent The tail lights on the tow vehicle from feeding from its own battery. My break buddy was depleting the tow vehicle battery on long trips. Solved my problem! 524458


Comments

Working great, no problems

Jon l - 06/20/2019

56873

- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


Just what I wanted. Looked in all the local auto stores with no luck. Came in two days. Works great. 314746



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


Needed to set up a circuit to activate my reverse lights on the trailer to light up the loading ramp. This worked great to keep the power from backfeeding into the car. 148921



- RM-792
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


I purchase these to set up my toad (CR-V) with the Road master 7 to 6 wiring kit along with the 2 back into 3 wire module to allow for me the use the turn signal lights (Yellow) operate separately from the brake lights so that the toad lights all work as they were set up by the manufacturer. This way also allows you to avoid having to buy the brake light relay if your vehicle brake lights are energized by the mechanical function of your braking system. Your overall cost is relative and as stated all of your lights work instead of the typical stop/tail/turn signal bulb on each side. 655651



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


This is a little premature to give a product rating. I will say that the diods iordered arrived sooner than expected. After reviewing the options for wiring a vehicle to be towed behind a mtrhome this is the way to process. Thank you, Jim 464083



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


Ordered a diode for a project on my RV and it worked out fine. I just wish the price was much cheaper for such a small part. 402096


Comments

Ok

Jim - 07/06/2018

40570

- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


Works just like I expected it to. 442633



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


I bought these electrical products for my brother‘s Fiat that he tows behind his moterhome for extra parts haven’t had to use them yet but it’s good to know that etrailer Corp. has the parts thanks George J. 570830



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


Using this to trigger a 12V device if one or both 12V sources are on. Essentially I need to turn off a device if my engines are running. I wanted to make sure that if one engine was not running it would still trigger the device. This worked perfectly because it isolated the input sources so there is no conflict when both 12V inputs are on. Lots of uses, sturdy construction - simply perfect! 254347



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


has worked great. 478527



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


I ordered the product to install in my 2014 VW. The next morning I got a call that what I had ordered would not ship right away and they told me if I didn't mind they could put everything I needed together and ship it right out. The he asked what I was going to use this for and It happened to be what I needed.i installed it today and it works great. 177040



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


This diode was easily installed and functions extremely well, as do all of the products we have purchased from etrailer.com. etrailer's extremely competitive prices, their outstanding customer service, and their free, quick delivery make them our go to company for all of our towing needs. 143778


Comments

The products are performing perfectly!

George C - 07/31/2015

13784
Comments

We love the equipment that we purchased from you. We have had no issues with towing our Miata.Thank you for your correspondence.

George C - 08/04/2015

13893

- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


Fantastic. The advice received from E-Trailer was perfect. The Diode was exactly what I needed. Small, inexpensive, and very effective. The adhesive back and included connectors couldn't have been a better fit. Needed this to prevent backfeeding of a Motorcycle Lift Battery in my pickup from powering the truck. Truck required a disconnect of the negative battery cable before towing behind a motorhome. 332628



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


I was amazed to learn that similar to plumbing, you can put a one way valve in a 12 volt wire as well. One of my batteries was not being charged when our RV was plugged in and to make sure I did not run down my engine battery I installed this diode. Simple and came with connections ready to be hooked up. Arrived pretty quickly too. That you Christina J for one on one over the phone help. 500181



- RM-792
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


Good product with excellent service! I can now use my reverse lights as work lights without back feeding my truck. Works great to correct those who have a have a habit of driving behind you with high beams on.... 232182



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


I needed these to wire a TOAD (tow vehicle). They have worked as advertised. The plus is that they are quality products. The con is that they are not cheap. 264095


Comments

Over a year and still working well. High quality.

Ron - 06/23/2017

25330

- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


What I like about your business is the fast fulfillment and delivery of the part i ordered. I will recommend etrailer in the future. 173141



- RM-792
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


Not too big so fitted in tight space well. Found crimps supplied on the loose side. Used other type which were more secure. Replacing the diodes l fitted earlier l found the problem l was looking for. Cable soldered joint. So now l,m all set for a while. This diode set looks very robust. 396322



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


I always have trouble receiving deliveries because I have a postal address that doesn't accept FedEx or UPS and a physical address that doesn't accept USPS. The website doesn't specify the shipping method, so I sent a note to customer service. The rep personally oversaw my shipment so that I got it quickly and at the right destination. It's that kind of service that keeps me coming back to etrailer.com 246724



- RM-792
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


I just installed them and they work as they should. I was isolating lighting on an equipment trailer for a brake and turn circuit. Now it does not backfeed. 517440



- RM-793
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


I needed a way to flat tow my 1951 M38 Korean War Jeep (converted to 12 volt). I picked up three of these diodes (stop, Left, right) and wired them into my jeep and trailer harnesses . Now when I connect the Jeep to my tow vehicle, the Jeep tail lights slave off the tow vehicle, yet when I disconnect my tow vehicle, the Jeep light revert back to the jeep harness. Made my flat tow capability very easy. Input side is two connectors, output side is single connector. One small issue is I needed a couple extra after market solder-less connectors since the ones that came with the diodes were too large for the trailer harness wire I was using. Crimping the connectors were not a tight enough connection....but with smaller connectors, the diodes now work great. Been using them for over a year now with zero issues. 713920



- RM-792
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


Can use these for allot more than just a towed vehicle. I used them for my loading lights on my trailer to help with backing the trailer at night. Just pulled reverse power wire from 7 pin to original cargo light wiring. Works great. 658792



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


I bought all Roadmaster parts for my tow car. ALL worked as advertised(GREAT) I thought about a 4 star because slow delivery but you all were helpful. 621601



- RM-790
by:

Review from a similar Roadmaster Hy-Power in Accessories and Parts


So far so good 614214


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Ask the Experts about this Roadmaster Accessories and Parts

Do you have a question about this Accessories and Part?


  • Where to Install Diodes when Installing Roadmaster Invisibrake with Tow Bar Lighting
  • If you check out the picture I attached you will see where to install the diodes on your vehicle to install both the Roadmaster InvisiBrake Supplemental Braking System # RM-8700 and the part # HM56304 that you referenced. For a diode kit you would want the part # RM-794.
    view full answer...

  • Can 2013 Fiat 500 with Separate Taillights be Wired for Flat Towing with Diodes for Combined
  • Your situation is a very common one and the solution you proposed is the easiest and most popular solution. Like you mentioned you'd be wiring up the separate taillights to function like combined ones. You'd need a total of 4 diodes which we have that as a 4 pack with part # RM-794. I attached the correct diagram you'd need to use for your application.
    view full answer...

  • Winnebago with Seperate Taillights Towing a Jeep and Troubleshooting Brake Lights not Working
  • Since you have connected your Winnebago to both your Jeep and boat trailer and are experiencing the same issue it is likely related to the vehicle wiring on your Winnebago that is the issue. The first thing that I would check would be the vehicle connection 6-way on your Winnebago and make sure that all the wiring to the connection points are in-tact and that the pins do not show any signs of corrosion or damage. You will want to use a circuit tester like part # 40376 to test the...
    view full answer...

  • What is the Voltage and Amperage Rating for Roadmaster Diodes
  • Roadmaster diode # RM-790 is rated for a maximum of 24 volts and 85 amps. So you can use it on a 12 or 24 volt system as long as the amperage draw does not exceed 85 amps. At 30 volts that would exceed the rated capacity of the diode and eventually you would have to replace the diode if the voltage was sustained over 24 volts long enough and/or frequent enough.
    view full answer...

  • Diode Kit Recommendation for Installing Hopkins Tow Bar Wiring on Vehicle with InvisiBrake
  • The # RM-794 would be the correct kit to install the Hopkins Wiring Harness part # HM56007 in your 2012 Ford Focus with the Invisibrake part # RM-8700. I attached a diagram of how it will install as well.
    view full answer...

  • 2013 Jeep Wrangler Turn Signals Stop Flashing When Being Flat Towed
  • The Roadmaster FuseMaster Fuse Bypass # RM76511 is not vehicle-specific so it can work on a Wrangler but I do not believe that would be the solution to your issue. It sounds to me like you are in need of diodes; I looked up the harness you referred to and while it is similar to something like the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267, your harness did not seem to include diodes like the Roadmaster kit. What it sounds like is happening is there is electrical...
    view full answer...

  • Recommended Base Plates and Flat Tow System for 2015 Jeep Wrangler
  • For your 2015 Jeep Wrangler to use the Tow Defender # RM-4750, you will need the Roadmaster EZ4 Base Plate Kit - Removable Arms # RM-521448-4. This combination will work well with the Roadmaster Nighthawk All Terrain Tow Bar w/ LED Lights # RM-676. Then you will need a wiring kit for your Jeep. I recommend the portions of the Roadmaster wiring kit # RM-15267 that aren't already integrated into your tow bar. These parts are female spade # RM-300115-00, 3 feet wire loom # 459075-1,...
    view full answer...

  • Do Diodes Need to be Replaced for Roadmaster Wiring Kit # RM-154 on a 2015 Jeep Grand Cherokee
  • If you are using the Roadmaster Universal Hy-Power Diode Wiring Kit # RM-154 then I have some steps you can take to see what is wrong. It could very well be the diodes that you are using. Try using your tester on the wiring right before it enters the diodes if you are getting a signal before they enter the diodes but not a signal afterwards then you need to replace the diodes with part # RM-794. Another possibility is that the wiring itself is bad. You can use the Wesbar # W002230...
    view full answer...

  • Are the Roadmaster Hy-Power Diodes Water Tight
  • As long as you are not exceeding the 6 amps at 12 volts per diode max load then you can definitely use the configuration in your diagram. I spoke with my contact at Roadmaster who said that the connections are not watertight but the internal components are. You would either need to find a way to make the connections watertight (as you mentioned in your diagram) or simply wipe the connections off if you were to go off-road with your 2011 Jeep Wrangler and get the diode(s) wet. We have...
    view full answer...

  • Flat Tow Wiring Kit Compatible with 2005 Honda Pilot
  • The TowDaddy Custom Tail Light Wiring Kit for Towed Vehicles # TD3018 is not a fit for your 2005 Honda Pilot. TowDaddy was acquired by Hopkins, but they no longer make these harnesses and I do not recommend them. Hopkins does make some custom wiring connection harnesses but unfortunately they do not make one for your Pilot. For a better alternative I recommend the Roadmaster Diode 7-Wire to 6-Wire Flexo-Coil Wiring Kit # RM-15267 or the Roadmaster Universal Hy-Power Diode Wiring Kit...
    view full answer...

  • Diode Kit for Flat Towing 2012 Ford Focus
  • We do have flat towing diode kits for the various versions of the 2012 Ford Focus, such as # RM-154, that you can see on the linked page. You can use the Select Vehicle Style drop-down menu bar at the top of the page to choose your Focus and then see suitable kits. We also have individual diodes # RM-790 and # RM-690 as well as 2-pack # RM-792 and 4-pack # RM-794. All of these come with spade terminals that accept wire leads.
    view full answer...

  • Replacement Diode to Use on a 1999 Jeep Grand Cherokee
  • If you were needing a single diode then you are looking for part # RM-790, if you need a set of diodes then it will be # RM-792. If you are needing to use 4 diodes, the part is # RM-794.
    view full answer...

  • Does my Tow Bar Wiring Harness Require the use of Hy-Power Diodes
  • Wherever you use the RV to signal the vehicle's factory lights, diodes will be needed to stop the backflow of electricity. If you are using a set of external lights like part # TL21RK then the diodes will not be needed but since you have the wiring harness attached to your factory lights then you will want to use a set of diodes like part # RM-794. I have attached a diode installation help article for you to take a look at as well.
    view full answer...

  • Wiring a Trailer Towed Behind a Motorcycle for Single LED Taillights
  • On your motorcycle the taillight circuit is a separate lighting signal, this means that the brake light is on a different circuit than the turn signal. If you were wanting taillights for your trailer with only one light and in an LED configuration you would need to install a taillight converter and then you can install the taillights of your choice. The Hopkins Tail Light Converter # HM48895 is compatible with LED taillights. This converter will hard-wire into the motorcycle wiring...
    view full answer...

  • Diodes Only for Tow Bar Wiring for a 2012 Ford Fusion
  • We have diodes that you can purchase by themselves without the whole kit. Hopkins has a set of 4 diodes, # 48955, that you could use. Roadmaster also has a 4-pack, # RM-794. Or you can get a single diode using # RM-790, or a pair using # RM-792. It looks like your 2012 Ford Fusion would only need 4 diodes for tow bar wiring so one of the 4-packs is your best option if you need all of them.
    view full answer...

  • Replacement Roadmaster Diode Recommendation
  • Part number # RM-794 is for 4 diodes, so while it would work for you a better option would be to order a quantity of 3 of the part # RM-790 as that is a single diode.
    view full answer...


Do you have a question about this Accessories and Part?




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Info for this part was:

Expert Research:
Michael H
Expert Research:
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Installed by:
Jeff D

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